Could tell me the specifics? Also, are there differences between BGI/II/ToB?

I think it is -1 to luck and -1 to all your rolls. The longer you leave it without resting, the worse it gets. I think

OK, thanks. The -1 rolls don't show up on the char info page though.

-1 to everything, and I think extra -a for every 4 hours without rest(My char didn't rested for 2 days)

The main effect is whining, moaning and complaining NPC's :1eye:

At some point, the character stat points also start decreasing. It's all in the manual, actually.

Has anyone actually noticed a decline in their rolls as a result of fatigue? I mean I know it's supposed to but I have never noticed much of a difference - bar the incessant whining. Also the effects of fatigue are not displayed anywhere, except for the little symbol and the explanation "fatigued".

Yes, I haven't seen any changes....

Iirc the -1 to rolls is supposed to affect you once 12 hours have passed since the last rest. The fatigue symbol you get after being hasted or staying awake also causes you to be effected by the spell slow.

And even I dont know if I ahve ever really been affected by the -1 ...